Please try one of the following 4 path:
Others -> Hiace -> KDH -> (12/2013->) -> w/o Smart Key -> MT
Others -> Hiace -> KDH -> (12/2013->) -> w/o Smart Key -> AT
Others -> Hiace -> KDH -> (12/2013->) -> w Smart Key -> MT
Others -> Hiace -> KDH -> (12/2013->) -> w Smart Key -> MT
Then go to Main menu-->Coding -> Warning -> Seat belt warning, here you will see reset timing belt light function.